Question: What are the operating system which start with the letter w
Paraphrase: What are the working framework which begin with the letter w
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q9135 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'w')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: Windows 95, Windows 95, Windows XP Professional x64 Edition, Windows XP Professional x64 Edition, webOS, webOS, Windows Preinstallation Environment, Windows Preinstallation Environment, Windows 8, Windows 8, Windows 7, Windows 7, Windows Server 2003, Windows Server 2003, Windows RT, Windows RT, Windows Mobile, Windows Mobile, Windows Vista, Windows Vista, Windows Server 2008, Windows Server 2008, Windows XP, Windows XP, Windows Home Server, Windows Home Server, Windows Server 2012, Windows Server 2012, Windows Server, Windows Server, Windows Server 2008 R2, Windows Server 2008 R2, Windows 2.1x, Windows 2.1x, Windows MultiPoint Server, Windows MultiPoint Server, Windows Embedded, Windows Embedded, Windows 98, Windows 98, Windows 3.1, Windows 3.1, Windows Me, Windows Me, Windows Fundamentals for Legacy PCs, Windows Fundamentals for Legacy PCs, Windows NT 4.0, Windows NT 4.0, Windows 2000, Windows 2000